Improvement in lanterns



W. WESTLAKE.

Lantern.

No. 94,536. Patented Sept. 7, 1869.

N. PETERS. FHOTO-LJTHDGRAPHER. WASHINGTON. a CV illniirll sale new Gtjfllina Letters Palent No. 94,536, dated September 7, 1869.

IMPROVEMENT IN LANTERNS.

The Schedule referred to in these Letterl- Patent and making part of the same.

To all whom it may concern Be it known that I, WILLIAM \VEs'rLAKn, of the city of Chicago, in the county of Cook, and State of Illinois, have invented certain new and useful Improvements in Lanterns; and 1 do hereby declare that the following is a full, clear, and exact description thereof, reference being bad to the accompanying drawings, making part of this specification, in which- Figure 1 represents a side view.

Figure 2, a vertical section.

Figure 3, a detail, showing the covering for the ratchet-opening.

The nature and object of my invention consist in a novel construction of a lantern, so arranged that all of itsparts will perform their functions without disturbance from winds or the elements of nature outside, and in the several parts and combinations hereinafter set forth and claimed as new.

To enable others skilled in the art to make and use my improved lantern, I will describe its construction and operation.

The base A and A is made by making the band A just large enough to pass a sun-burner lamp-chimney through it, and about one and one-half inch in height.

To this I attach the wire or other open base A, for the purpose hereinafter named.

The oil-cup B is made of the same size as the band A, and is attached thereto by means of the springs g, hooks, or other suitable fastenings.

This oil-cup is provided with a burner or wick-tube and cap similar in construction to an ordinary sunburner, except that the upper annular projection i is as shown.

The space between this flange i and the top of the oil-cup is not covered by the chimney as in sun-burners I usually make an opening or'slit, j, in the outer band, for the passage of an elongated spindle to the wick-ratchet, so that the wick may be regulated from the outside. r

I cover this openingj with a sliding piece, d, which is permanently attached to the oil-cup, and is made to slide up, either on the outside or inside of the band A, as may be desired, and it extends up against the gpindle c of the wick-ratchet, so as to form a support or it.

The chimney E comes down to or nearly to the flange t of thebnrner, but does not rest upon it, as it is supported by a pin, b, fig. 1, which is attached to the spring u, and passes through the band A, thus supporting it in place by a single spring-catch.

When the chimney is to be withdrawn for purposes of cleaning or inserting a new one, the oil-cup B is detached and withdrawn, and as the burner, and the ratchet-support d are withdrawn with it, thespace for its passage is entirelycleared from obstructions. By simply lifting the spring a, the pin 11 is withdrawn from beneath the end of thechimney, and it passes down through the band A without obstruction, making it very easy to. take out the chimney through the base of the lantern, and does away with all bands for-filling the space between the chimney or globe and the ven tical band of the base, and the pin 1: furnishes a strong support for such chimney or globe, without requiring any shoulder, bead, swell, or other projection of the globe for its support. 7

The continuation of the chimney E from the deflector D upward, I usually make of tin, which is curved and constructed as shown, so that any'ordinary sunburner chimney can be used, for the reason that this class of chimneys can be found in almost aliplacesand' can, therefore, be easily replaced in case of breakage. I, however, prefer a chimney especially made for this lantern, which is a glass cylinder, about four inches in length, of the sun-burner chimney diameter and without swell or contraction.

On opposite sides of the band A, I attach the tubes G, which are about four inches in. length, (the precise length or height is not material, so thatrtlndeflector is not carried too high.) and extend upward and outward, as shown.

To the top of these tubes I attach firmly a hollow annular deflector, D. This deflector can be made in any convenient form, and is made hollow, as shown.

The lower plate D is concave, and arranged in ref? erence to the light, so to produce a focus about six inches below the base A. The lower side of this plate is burnished, or made of material which will deflect the li ht.

The upper plate 1) is placed sufiicient-ly far from the lower, 1), to leave a considerable space to form an airchamber or reservoir, which is connectedwith the airspace below the burner by means of thetubes or pas sages 0.

Air is admitted into this chamber partly through the protected openings 1, and partly from the space between the metallic extension P of the chimney and the domeband E, which band F is conneotedwith or-forms a part of the plate or annular bamd'D, as shown, while the metallic chimney-extension P is connected with and supported by the lower or deflector-plate l).

The band 1 of the dome is perihrated at J, as shown,

or it may be cut away in places, and these holes covor convenient form.

In operation it will be seen that all of the air which comes in contact with or feeds the flame is taken from a distance above such flame, as the air-passages in-the base are entirely closed. The air enters the chamber there is no-direct or immediate connection with the surrounding atmosphere, and, therefore, no disturbance of the flame whatever the condition the atmosphere may he. The interposed reservoir or'air-chamber I). also adds greatly to the steadiness of the flame, for thereason that when the tubes are of any considerable 7 any sudden movement of the lantern will parlen th, tiafiy exhaust the supply of air, and make the flame weak, and a sudden return to the equilibrium, owing to its elasticity, will cause the flame to flare. This diffieultyis very nearly overcome by iuterposing a reservoir between thehighest point of induction of the air and the point of delivery into the combustiomchamber of the lantern. liy this arrangement of the air-chamber so near the burner, I am enabled to dispense with the usual wire guard to protect the globe from'breakage by concussions, and 1 am also enabled to'u'se common lamp-chimneys inplace of globes, which are much cheaper and more readily obtained, and they are pro-' 'tected from breakage by storms when somewhat heated, as the chamber or deflector will keep them from coming in contact, making it, as I have determined,'fr0m experiments, a powerful and yet a. comparatively cheap lantern.

\Vhat I claim as new, and desire to secure by Let- V ters Patent, is-

1. The air-chamber formed by the plates or disks D and D',and located between the dome and base of the lantern, in ,relationto the globe, substantially asand for the purposes specified.

' 2. The (iblllbillittloll of the band F and disk D, with the bandl and disk D, when constructed and operatiugsubstantially as described.

3. The deflector D, forming the lower disk of the air-chamber D, inf combination with the open base A, \vhenso arranged'as to concentrate the light directly beneath the base of the lantern, substantially as speci- "fied. 4. a

4. The permanent wick-ratchet support 61, when attached to the oil-pot, and so located as to cover or stop the opening in the band'A, substantially as specified. The combination and arrangement of the bands F and I ,-.disks- DIand'D, with the tubes G and base .A', substantially as described.

\Vitnesses :v I

- l ).'A-. WEsT, L. T BOND \VILLIAM WESTLAKE. 

